Black Two-tier Base - 275 lb Capacity - 45.10" Height - Assembly Required - 1 Each Healthier approach to work - sit and stand for a more active lifestyle Easily adjust your workstation once you pair this 2-tier base with your tabletop Raises height from 26.57" to 45" at the speed of 1.3" per second Powerful dual motor for synchronized and precise compensation for uneven loads Use with 48" to 72" tops that are 24" to 30" deep